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authorMax Krummenacher <max.krummenacher@toradex.com>2018-03-07 18:20:42 +0100
committerMarcel Ziswiler <marcel.ziswiler@toradex.com>2018-03-23 18:09:33 +0100
commitce58487ab58beba1920687b9fcc6a482f53e6380 (patch)
tree24066b513e3e373a6581f477b8a5a49ac37ef513 /arch/arm/boot
parent8d3c9c26670e3eb24503c67ba21fb053459a7393 (diff)
arm: dts: apalis imx6: add reset controller for atmel mxt multitouch
The Atmel maXTouch multitouch controller driver does not control the reset line connected to the chip. Use a GPIO reset controller node to release the reset line and make the controller work. Note that both the reset controller's and the mxt mutitouch controller's node are set to disabled. Either change this in the dtsi source or fix this from U-Boot if you use an Atmel maXTouch multitouch controller. setenv fdt_fixup 'fdt addr ${fdt_addr_r} && fdt set /soc/aips-bus@02100000/i2c@021a0000/atmel_mxt_ts@4a status okay && fdt set /mxt-reset status okay' Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/imx6qdl-apalis-eval.dtsi9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6qdl-apalis-eval.dtsi b/arch/arm/boot/dts/imx6qdl-apalis-eval.dtsi
index 1e313dd37c98..1f00010e2bd0 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis-eval.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis-eval.dtsi
@@ -47,6 +47,14 @@
};
};
+ mxt_reset: mxt-reset {
+ compatible = "gpio-reset";
+ reset-gpios = <&gpio6 9 GPIO_ACTIVE_LOW>;
+ reset-delay-us = <1>;
+ #reset-cells = <0>;
+ status = "disabled";
+ };
+
v4l2_cap_0 {
compatible = "fsl,imx6q-v4l2-capture";
ipu_id = <0>;
@@ -159,6 +167,7 @@
reg = <0x4a>;
interrupt-parent = <&gpio6>;
interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
+ resets = <&mxt_reset>;
status = "disabled";
};